﻿//******************************************************************************************************
//Copyright (c) 2014 Steven Giacomelli (stevegiacomelli@gmail.com)
//
//Permission is hereby granted, free of charge, to any person obtaining a copy of this
//software and associated documentation files (the "Software"), to deal in the Software
//without restriction, including without limitation the rights to use, copy, modify,
//merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
//permit persons to whom the Software is furnished to do so, subject to the following conditions:
//
//The above copyright notice and this permission notice shall be included in all copies
//or substantial portions of the Software.
//
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
//INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
//PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
//FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
//ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//*****************************************************************************************************

[<AutoOpen>]
module internal SharpGeo.Core.ByteConversion

open System

let isLittleEndian = BitConverter.IsLittleEndian

let toLittleEndianInt32 (value:byte[]) (index:int) =
    (int value.[index + 3] <<< 24) + (int value.[index + 2] <<< 16) + (int value.[index + 1] <<< 8) + int value.[index]

let toLittleEndianDouble (value:byte[]) (index:int) =
    let temp = value.[index..index+7]
    if not isLittleEndian then
        Array.Reverse temp
    BitConverter.ToDouble(temp, 0)